TalentJR apps
The final challenge mixes every lesson. Before you work, look at the numbers: is there a 9 or 99? Are they close together? Can you double or halve? Choosing the right strategy is the real skill.
✓ You passed this lesson’s test.
Look first — “spot the numbers, then pick the strategy”
Use it for: Mental maths rounds, Olympiad practice, quizzes and everyday sums.
Check: 413 + 99 = 512 ✓
Work it out in your head or on paper, type the answer and press Check. Stuck? Press “Show me how”.
Right: 0 · Tried: 0
20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.
🏅 Sign in with Google to earn the 🏆 Mental Maths Champion badge when you pass — and a certificate when you finish all 6 lessons of Part 3 · Mental maths for daily life. You can still take the test without signing in.
Why does it work? When should you use it? Ask in English, मराठी or हिंदी.
Sign in with Google to ask Free — 20 questions a day.
Prefer a real teacher? TalentJR teachers take live online classes anywhere in India and visit homes in selected cities. Tell us what you need and our team will call you with timings and fees.